2NZ2

Crystal structure of human argininosuccinate synthase in complex with aspartate and citrulline

X-RAY DIFFRACTION

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Starting Model(s)

Initial Refinement Model(s)
Type	Source	Accession Code	Details
experimental model	PDB	1VL2	PDB ENTRY 1VL2

Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	VAPOR DIFFUSION	7	293	16% PEG 3350, 0.15M DL-MALIC ACID, pH 7.0, VAPOR DIFFUSION, temperature 293K

Crystal Properties
Matthews coefficient	Solvent content
2.34	47.44

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 95.94	α = 90
b = 117.47	β = 90
c = 155.15	γ = 90

Symmetry
Space Group	F 2 2 2

Diffraction

Diffraction Experiment
ID #	Crystal ID	Scattering Type	Data Collection Temperature	Detector	Detector Type	Details	Collection Date	Monochromator	Protocol
1	1	x-ray	100	CCD	MARRESEARCH	mirrors	2006-08-21	M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	BESSY BEAMLINE 14.1	0.95373	BESSY	14.1

Data Collection

Overall
ID #	Resolution (High)	Resolution (Low)	Percent Possible (Observed)	R Merge I (Observed)	R Sym I (Observed)	Net I Over Average Sigma (I)	Redundancy	Number Reflections (All)	Number Reflections (Observed)	Observed Criterion Sigma (F)	Observed Criterion Sigma (I)	B (Isotropic) From Wilson Plot
1	2.4	30	99.7	0.152	0.205		7.3	17403	17358			28.8

Highest Resolution Shell
ID #	Resolution (High)	Resolution (Low)	Percent Possible (All)	Percent Possible (Observed)	R Merge I (Observed)	R-Sym I (Observed)	Mean I Over Sigma (Observed)	Redundancy	Number Unique Reflections (All)
1	2.4	2.5	100		0.268	0.455	3.98	7.5	1967

Refinement

Statistics
Diffraction ID	Structure Solution Method	Cross Validation method	Starting model	Resolution (High)	Resolution (Low)	Cut-off Sigma (I)	Cut-off Sigma (F)	Number Reflections (All)	Number Reflections (Observed)	Number Reflections (R-Free)	Percent Reflections (Observed)	R-Factor (All)	R-Factor (Observed)	R-Work	R-Free	R-Free Selection Details	Mean Isotropic B
X-RAY DIFFRACTION	MOLECULAR REPLACEMENT	THROUGHOUT	PDB ENTRY 1VL2	2.4	19.41	2	2	16407	16407	864	100	0.19757	0.19757	0.1939	0.26475	RANDOM	17.865

Temperature Factor Modeling
Anisotropic B[1][1]	Anisotropic B[1][2]	Anisotropic B[1][3]	Anisotropic B[2][2]	Anisotropic B[2][3]	Anisotropic B[3][3]
1.05			0.3		-1.36

RMS Deviations
Key	Refinement Restraint Deviation
r_dihedral_angle_2_deg	39.051
r_dihedral_angle_3_deg	19.682
r_dihedral_angle_4_deg	15.73
r_dihedral_angle_1_deg	14.546
r_scangle_it	2.667
r_angle_refined_deg	1.858
r_scbond_it	1.726
r_mcangle_it	1.108
r_mcbond_it	0.669
r_nbtor_refined	0.304
r_symmetry_vdw_refined	0.264
r_nbd_refined	0.229
r_symmetry_hbond_refined	0.223
r_xyhbond_nbd_refined	0.195
r_chiral_restr	0.162
r_bond_refined_d	0.014
r_gen_planes_refined	0.005
r_bond_other_d
r_angle_other_deg
r_gen_planes_other
r_nbd_other
r_nbtor_other
r_xyhbond_nbd_other
r_metal_ion_refined
r_metal_ion_other
r_symmetry_vdw_other
r_symmetry_hbond_other
r_symmetry_metal_ion_refined
r_symmetry_metal_ion_other
r_mcbond_other
r_rigid_bond_restr
r_sphericity_free
r_sphericity_bonded

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	3191
Nucleic Acid Atoms
Solvent Atoms	210
Heterogen Atoms	22

Software

Software
Software Name	Purpose
REFMAC	refinement
MAR345	data collection
XDS	data reduction
XSCALE	data scaling
MOLREP	phasing